Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-82653— SiYuan before v3.8.1 Stored XSS via confirmDialog

Quick assessment

Affected
siyuan-note siyuan
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SiYuan是SiYuan团队开源的一个以隐私为先的个人知识管理系统。 SiYuan 3.8.1之前版本存在跨站脚本漏洞，该漏洞源于confirmDialog()中未转义的包名和笔记本名直接插入innerHTML赋值，可能导致存储型跨站脚本攻击，攻击者可提交恶意bazaar包在用户浏览器中执行脚本。

CVSS 8.9 · High EPSS 0.37% · P29

Affected Version Matrix 2

VendorProduct Version RangeStatus
siyuan-note siyuan < 3.8.1 affected
3.8.1 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-82653

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
SiYuan before v3.8.1 Stored XSS via confirmDialog
Source: CVE Program / CVE List V5
Vulnerability Description
SiYuan before v3.8.1 contains a stored cross-site scripting vulnerability in confirmDialog() where unescaped package names and notebook names are interpolated directly into innerHTML assignments. Attackers can submit malicious bazaar packages with HTML/script payloads in the name field that execute in users' browsers when uninstalling packages or unlocking encrypted notebooks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
SiYuan 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SiYuan是SiYuan团队开源的一个以隐私为先的个人知识管理系统。 SiYuan 3.8.1之前版本存在跨站脚本漏洞，该漏洞源于confirmDialog()中未转义的包名和笔记本名直接插入innerHTML赋值，可能导致存储型跨站脚本攻击，攻击者可提交恶意bazaar包在用户浏览器中执行脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
siyuan-note siyuan 0 ~ 3.8.1 -

II. Public POCs for CVE-2026-82653

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-82653

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-82653 (2)

Same Patch Batch · siyuan-note · 2026-08-30 · 6 CVEs total

CVE-2026-82654 8.9 HIGH SiYuan before v3.8.1 Stored XSS via block name
CVE-2026-82649 7.0 HIGH SiYuan before 3.8.1 Local Privilege Escalation via Uncontrolled Search Path
CVE-2026-82652 5.3 MEDIUM SiYuan before v3.8.1 Information Disclosure via Publish Access
CVE-2026-82651 4.9 MEDIUM SiYuan before v3.8.1 Missing Authorization via /history and /repo/diff
CVE-2026-82650 4.4 MEDIUM SiYuan before v3.8.1 Path Traversal via /api/template/render

IV. Related Vulnerabilities

Same product: siyuan
Same vendor: siyuan-note
Same weakness: CWE-79

V. Comments for CVE-2026-82653

No comments yet

Leave a comment